🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 997.4

Radius: 11.2

Gravity: 7.95 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.25 AU - 1.29 AU

Year: 954 Days

Day: 9.7 Hours

Environment

Temp: -187 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 49,107,191 km

• M1: 140,323 km (0.112 R)
• M2: 222,302 km (0.11 R)
• M3: 303,983 km (0.061 R)
• M4: 374,144 km (0.106 R)
• M5: 477,816 km (0.108 R)
• M6: 553,662 km (0.097 R)
• M7: 777,311 km (0.113 R)
• M8: 876,793 km (0.052 R)
• M9: 952,639 km (0.116 R)
• M10: 1,089,521 km (0.096 R)
• M11: 1,256,473 km (0.108 R)
• M12: 1,359,396 km (0.083 R)
• M13: 2,139,549 km (0.083 R)
• M14: 2,234,843 km (0.117 R)
• M15: 2,390,574 km (0.105 R)
• M16: 2,509,654 km (0.114 R)
• M17: 2,806,007 km (0.105 R)
• M18: 2,910,875 km (0.096 R)
• M19: 3,027,711 km (0.061 R)
• M20: 3,189,726 km (0.083 R)
• M21: 3,511,062 km (0.069 R)
• M22: 3,704,342 km (0.091 R)
• M23: 4,125,311 km (0.079 R)
• M24: 4,196,968 km (0.063 R)
• M25: 4,281,192 km (0.119 R)
• M26: 4,353,747 km (0.113 R)
• M27: 4,451,135 km (0.101 R)
• M28: 4,537,004 km (0.049 R)
• M29: 4,611,055 km (0.081 R)
• M30: 4,735,371 km (0.051 R)
• M31: 5,205,258 km (0.107 R)
• M32: 5,517,917 km (0.079 R)
• M33: 5,796,768 km (0.029 R)
• M34: 6,189,313 km (0.035 R)
• M35: 6,368,082 km (0.091 R)
• M36: 6,576,622 km (0.089 R)
• M37: 6,843,953 km (0.066 R)
• M38: 6,929,074 km (0.11 R)
• M39: 7,028,856 km (0.109 R)
• M40: 7,129,236 km (0.103 R)
• M41: 7,432,920 km (0.059 R)
• M42: 7,770,562 km (0.072 R)
• M43: 7,978,503 km (0.079 R)
• M44: 8,128,251 km (0.087 R)
• M45: 8,218,458 km (0.106 R)
• M46: 8,294,005 km (0.115 R)
• M47: 8,521,843 km (0.055 R)
• M48: 8,613,546 km (0.045 R)
• M49: 8,828,818 km (0.106 R)
• M50: 9,217,772 km (0.087 R)
• M51: 9,359,142 km (0.037 R)
• M52: 9,771,733 km (0.098 R)
• M53: 9,851,768 km (0.082 R)
• M54: 9,948,109 km (0.082 R)
• M55: 10,304,002 km (0.1 R)
• M56: 10,467,213 km (0.096 R)
• M57: 10,730,057 km (0.115 R)
• M58: 11,044,960 km (0.095 R)
• M59: 11,262,176 km (0.059 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 603.6

Radius: 12.4

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.84 AU - 2.18 AU

Year: 1900 Days

Day: 9.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 49,107,191 km

• M1: 157,975 km (0.042 R)
• M2: 240,254 km (0.086 R)
• M3: 380,727 km (0.089 R)
• M4: 469,289 km (0.076 R)
• M5: 587,471 km (0.06 R)
• M6: 673,041 km (0.1 R)
• M7: 771,476 km (0.098 R)
• M8: 1,027,737 km (0.084 R)
• M9: 1,226,703 km (0.101 R)
• M10: 1,488,948 km (0.105 R)
• M11: 1,570,179 km (0.09 R)
• M12: 1,684,622 km (0.05 R)
• M13: 2,263,565 km (0.086 R)
• M14: 2,369,929 km (0.098 R)
• M15: 2,538,825 km (0.088 R)
• M16: 2,774,442 km (0.105 R)
• M17: 2,901,451 km (0.12 R)
• M18: 3,082,464 km (0.117 R)
• M19: 3,240,739 km (0.118 R)
• M20: 3,347,851 km (0.113 R)
• M21: 3,497,000 km (0.105 R)
• M22: 3,717,956 km (0.114 R)
• M23: 4,000,696 km (0.063 R)
• M24: 4,115,737 km (0.103 R)
• M25: 4,290,467 km (0.101 R)
• M26: 4,378,879 km (0.074 R)
• M27: 4,512,470 km (0.05 R)
• M28: 4,723,104 km (0.11 R)
• M29: 4,875,544 km (0.113 R)
• M30: 4,983,255 km (0.04 R)
• M31: 5,060,746 km (0.072 R)
• M32: 5,169,803 km (0.083 R)
• M33: 5,390,310 km (0.081 R)
• M34: 5,710,899 km (0.092 R)
• M35: 5,889,818 km (0.074 R)
• M36: 6,087,287 km (0.12 R)
• M37: 6,270,096 km (0.089 R)
• M38: 6,404,285 km (0.078 R)
• M39: 6,573,330 km (0.104 R)
• M40: 6,743,872 km (0.102 R)
• M41: 7,229,317 km (0.102 R)
• M42: 7,387,891 km (0.117 R)
• M43: 7,726,132 km (0.065 R)
• M44: 7,870,194 km (0.12 R)
• M45: 7,996,904 km (0.053 R)
• M46: 8,529,173 km (0.103 R)
• M47: 8,903,168 km (0.084 R)
• M48: 9,435,586 km (0.117 R)
• M49: 10,076,464 km (0.06 R)
• M50: 10,253,588 km (0.115 R)
• M51: 10,392,265 km (0.067 R)
• M52: 10,631,173 km (0.113 R)
• M53: 11,053,936 km (0.115 R)
• M54: 12,375,933 km (0.112 R)
• M55: 12,460,156 km (0.067 R)
• M56: 14,185,917 km (0.089 R)
• M57: 14,296,171 km (0.059 R)
• M58: 14,384,733 km (0.101 R)
• M59: 15,076,623 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.7

Radius: 14.4

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 2.11 AU - 2.41 AU

Year: 2266 Days

Day: 11.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 49,107,191 km

• M1: 297,550 km (0.109 R)
• M2: 491,429 km (0.059 R)
• M3: 747,092 km (0.083 R)
• M4: 838,945 km (0.106 R)
• M5: 961,017 km (0.108 R)
• M6: 1,071,719 km (0.113 R)
• M7: 1,462,170 km (0.11 R)
• M8: 1,736,532 km (0.094 R)
• M9: 1,863,391 km (0.068 R)
• M10: 2,074,474 km (0.119 R)
• M11: 2,209,710 km (0.109 R)
• M12: 2,384,740 km (0.032 R)
• M13: 2,532,991 km (0.115 R)
• M14: 2,678,251 km (0.087 R)
• M15: 2,781,024 km (0.112 R)
• M16: 3,050,301 km (0.118 R)
• M17: 3,157,861 km (0.084 R)
• M18: 3,307,759 km (0.074 R)
• M19: 3,474,111 km (0.117 R)
• M20: 3,686,092 km (0.099 R)
• M21: 3,960,753 km (0.087 R)
• M22: 4,189,937 km (0.083 R)
• M23: 4,778,156 km (0.057 R)
• M24: 5,270,931 km (0.103 R)
• M25: 5,490,691 km (0.066 R)
• M26: 5,597,653 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.4

Radius: 11.7

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 2.51 AU - 3.63 AU

Year: 3587 Days

Day: 13.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 93.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 49,107,191 km

• M1: 200,461 km (0.115 R)
• M2: 471,383 km (0.103 R)
• M3: 594,053 km (0.112 R)
• M4: 669,750 km (0.086 R)
• M5: 769,681 km (0.077 R)
• M6: 952,639 km (0.105 R)
• M7: 1,479,822 km (0.092 R)
• M8: 1,560,156 km (0.114 R)
• M9: 1,669,662 km (0.087 R)
• M10: 1,824,496 km (0.046 R)
• M11: 1,999,076 km (0.072 R)
• M12: 2,088,536 km (0.105 R)
• M13: 2,256,085 km (0.104 R)
• M14: 2,460,137 km (0.035 R)
• M15: 2,719,540 km (0.059 R)
• M16: 2,953,960 km (0.115 R)
• M17: 3,389,140 km (0.09 R)
• M18: 3,587,058 km (0.113 R)
• M19: 3,900,764 km (0.071 R)
• M20: 4,300,490 km (0.079 R)
• M21: 4,378,131 km (0.074 R)
• M22: 4,693,484 km (0.045 R)
• M23: 4,773,518 km (0.109 R)
• M24: 4,934,935 km (0.115 R)
• M25: 5,139,435 km (0.077 R)
• M26: 5,242,657 km (0.069 R)
• M27: 5,367,422 km (0.057 R)
• M28: 5,769,242 km (0.094 R)
• M29: 6,115,262 km (0.062 R)
• M30: 6,512,743 km (0.094 R)
• M31: 7,170,675 km (0.102 R)
• M32: 7,826,063 km (0.065 R)
• M33: 8,233,418 km (0.066 R)
• M34: 8,403,212 km (0.112 R)
• M35: 8,647,804 km (0.07 R)
• M36: 8,770,923 km (0.114 R)
• M37: 9,093,905 km (0.098 R)
• M38: 9,828,431 km (0.083 R)
• M39: 11,219,840 km (0.104 R)
• M40: 11,706,482 km (0.077 R)
• M41: 11,815,539 km (0.08 R)
• M42: 12,117,128 km (0.078 R)
• M43: 12,504,886 km (0.111 R)
• M44: 12,616,336 km (0.107 R)
• M45: 12,784,185 km (0.098 R)
• M46: 13,094,002 km (0.091 R)
• M47: 13,463,210 km (0.071 R)
• M48: 13,548,930 km (0.11 R)
• M49: 13,692,244 km (0.027 R)
• M50: 13,836,008 km (0.095 R)
• M51: 14,445,320 km (0.082 R)
• M52: 14,562,306 km (0.109 R)
• M53: 14,826,795 km (0.078 R)
• M54: 14,974,448 km (0.106 R)
• M55: 15,092,929 km (0.083 R)
• M56: 15,450,318 km (0.057 R)
• M57: 15,780,182 km (0.087 R)
• M58: 15,900,758 km (0.114 R)
• M59: 16,021,633 km (0.119 R)
• M60: 16,999,704 km (0.099 R)
• M61: 17,123,421 km (0.115 R)
• M62: 17,309,371 km (0.109 R)
• M63: 17,527,186 km (0.09 R)
• M64: 17,777,313 km (0.07 R)
• M65: 18,281,159 km (0.053 R)
• M66: 18,407,719 km (0.082 R)
• M67: 18,566,592 km (0.104 R)
• M68: 18,662,035 km (0.106 R)
• M69: 18,789,493 km (0.1 R)
• M70: 18,885,385 km (0.099 R)
• M71: 19,334,926 km (0.086 R)
• M72: 19,820,371 km (0.082 R)
• M73: 20,080,971 km (0.043 R)
• M74: 20,211,720 km (0.089 R)
• M75: 20,342,767 km (0.094 R)
• M76: 21,534,464 km (0.096 R)
• M77: 21,735,374 km (0.114 R)
• M78: 22,511,039 km (0.1 R)
• M79: 22,646,874 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 553.9

Radius: 12.6

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 3.1 AU - 4.44 AU

Year: 4881 Days

Day: 12.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 49,107,191 km

• M1: 176,376 km (0.091 R)
• M2: 285,732 km (0.085 R)
• M3: 502,200 km (0.106 R)
• M4: 688,599 km (0.119 R)
• M5: 1,027,139 km (0.106 R)
• M6: 1,133,802 km (0.093 R)
• M7: 1,491,940 km (0.091 R)
• M8: 1,598,752 km (0.12 R)
• M9: 1,692,401 km (0.093 R)
• M10: 1,869,225 km (0.1 R)
• M11: 2,241,425 km (0.092 R)
• M12: 2,418,549 km (0.06 R)
• M13: 2,600,460 km (0.063 R)
• M14: 2,824,857 km (0.079 R)
• M15: 3,055,537 km (0.071 R)
• M16: 3,272,753 km (0.11 R)
• M17: 3,954,620 km (0.081 R)
• M18: 4,148,199 km (0.112 R)
• M19: 4,455,773 km (0.025 R)
• M20: 4,634,841 km (0.104 R)
• M21: 5,351,565 km (0.089 R)
• M22: 5,930,209 km (0.113 R)
• M23: 6,327,092 km (0.094 R)
• M24: 6,656,058 km (0.12 R)
• M25: 6,809,845 km (0.06 R)
• M26: 7,146,889 km (0.098 R)
• M27: 7,730,021 km (0.087 R)
• M28: 8,163,705 km (0.104 R)
• M29: 8,438,965 km (0.047 R)
• M30: 8,577,643 km (0.111 R)
• M31: 8,970,188 km (0.115 R)
• M32: 9,541,053 km (0.075 R)
• M33: 9,714,736 km (0.067 R)
• M34: 10,035,773 km (0.068 R)
• M35: 10,389,871 km (0.096 R)
• M36: 10,688,319 km (0.102 R)
• M37: 11,110,634 km (0.113 R)
• M38: 12,096,783 km (0.078 R)
• M39: 12,727,338 km (0.102 R)
• M40: 13,239,561 km (0.088 R)
• M41: 13,563,141 km (0.117 R)
• M42: 13,693,291 km (0.086 R)
• M43: 13,823,890 km (0.032 R)
• M44: 14,383,386 km (0.072 R)
• M45: 15,051,341 km (0.102 R)
• M46: 15,592,885 km (0.115 R)
• M47: 16,140,862 km (0.116 R)
• M48: 17,009,727 km (0.105 R)
• M49: 18,144,127 km (0.04 R)
• M50: 18,323,495 km (0.094 R)
• M51: 18,684,325 km (0.074 R)
• M52: 18,938,193 km (0.057 R)
• M53: 19,302,763 km (0.103 R)
• M54: 20,634,932 km (0.103 R)
• M55: 21,274,164 km (0.091 R)
• M56: 21,425,557 km (0.103 R)
• M57: 22,187,907 km (0.038 R)
• M58: 22,881,443 km (0.066 R)
• M59: 23,153,262 km (0.104 R)
• M60: 23,386,934 km (0.097 R)
• M61: 23,543,114 km (0.074 R)
• M62: 23,738,938 km (0.073 R)
• M63: 24,053,393 km (0.079 R)
• M64: 24,211,219 km (0.118 R)
• M65: 24,686,491 km (0.096 R)
• M66: 24,805,721 km (0.101 R)
• M67: 25,124,813 km (0.094 R)
• M68: 25,405,159 km (0.101 R)
• M69: 26,049,776 km (0.072 R)
• M70: 26,863,140 km (0.09 R)
• M71: 27,355,167 km (0.086 R)
• M72: 27,478,586 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.9

Radius: 9

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.48 AU - 5.6 AU

Year: 6451 Days

Day: 8.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 49,107,191 km

• M1: 138,976 km (0.105 R)
• M2: 273,615 km (0.103 R)
• M3: 446,849 km (0.055 R)
• M4: 750,981 km (0.096 R)
• M5: 813,663 km (0.115 R)
• M6: 1,114,355 km (0.086 R)
• M7: 1,286,093 km (0.117 R)
• M8: 1,370,915 km (0.091 R)
• M9: 1,431,502 km (0.045 R)
• M10: 1,591,422 km (0.109 R)
• M11: 1,748,051 km (0.071 R)
• M12: 1,948,662 km (0.052 R)
• M13: 2,330,884 km (0.08 R)
• M14: 2,638,158 km (0.059 R)
• M15: 2,714,453 km (0.113 R)
• M16: 2,891,278 km (0.094 R)
• M17: 3,856,484 km (0.076 R)
• M18: 4,220,156 km (0.115 R)
• M19: 4,373,793 km (0.093 R)
• M20: 4,819,445 km (0.109 R)
• M21: 5,224,706 km (0.105 R)
• M22: 5,334,660 km (0.1 R)
• M23: 5,853,316 km (0.063 R)
• M24: 6,270,993 km (0.084 R)
• M25: 6,638,854 km (0.1 R)
• M26: 7,705,936 km (0.082 R)
• M27: 7,784,176 km (0.103 R)
• M28: 7,894,280 km (0.104 R)
• M29: 8,020,540 km (0.117 R)
• M30: 8,259,298 km (0.083 R)
• M31: 8,419,817 km (0.066 R)
• M32: 8,565,226 km (0.088 R)
• M33: 8,940,418 km (0.104 R)
• M34: 9,221,063 km (0.117 R)
• M35: 9,555,265 km (0.094 R)
• M36: 10,046,694 km (0.1 R)
• M37: 10,633,267 km (0.059 R)
• M38: 10,965,973 km (0.085 R)
• M39: 11,480,440 km (0.119 R)
• M40: 11,551,948 km (0.116 R)
• M41: 11,785,619 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.7

Radius: 8.4

Gravity: 13.66 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 5.29 AU - 5.83 AU

Year: 8743 Days

Day: 8 Hours

Environment

Temp: -231 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 49,107,191 km

• M1: 127,308 km (0.107 R)
• M2: 203,603 km (0.118 R)
• M3: 425,307 km (0.096 R)
• M4: 635,941 km (0.103 R)
• M5: 719,416 km (0.098 R)
• M6: 1,255,126 km (0.082 R)
• M7: 1,340,247 km (0.071 R)
• M8: 1,427,463 km (0.091 R)
• M9: 1,539,362 km (0.097 R)
• M10: 2,562,163 km (0.105 R)
• M11: 2,698,895 km (0.088 R)
• M12: 2,754,396 km (0.082 R)
• M13: 3,065,859 km (0.084 R)
• M14: 3,152,775 km (0.076 R)
• M15: 3,909,292 km (0.08 R)
• M16: 5,230,091 km (0.111 R)
• M17: 5,580,300 km (0.104 R)
• M18: 5,651,209 km (0.048 R)
• M19: 5,758,321 km (0.091 R)
• M20: 5,938,138 km (0.118 R)
• M21: 6,083,397 km (0.099 R)
• M22: 6,229,854 km (0.078 R)
• M23: 6,526,207 km (0.066 R)
• M24: 6,601,006 km (0.118 R)
• M25: 7,403,748 km (0.058 R)
• M26: 7,836,535 km (0.088 R)
• M27: 8,439,863 km (0.081 R)
• M28: 9,819,305 km (0.05 R)
• M29: 10,338,260 km (0.107 R)
• M30: 10,689,067 km (0.107 R)
• M31: 11,357,470 km (0.079 R)
• M32: 11,901,857 km (0.05 R)
• M33: 14,455,343 km (0.07 R)
• M34: 14,847,589 km (0.066 R)
• M35: 14,995,541 km (0.119 R)
• M36: 15,392,723 km (0.084 R)
• M37: 15,742,932 km (0.062 R)
• M38: 17,067,023 km (0.06 R)
• M39: 18,373,461 km (0.052 R)
• M40: 18,638,548 km (0.119 R)
• M41: 18,745,062 km (0.112 R)
• M42: 18,958,538 km (0.11 R)
• M43: 19,065,501 km (0.041 R)
• M44: 19,119,057 km (0.12 R)
• M45: 19,333,879 km (0.032 R)
• M46: 21,136,833 km (0.037 R)
• M47: 21,470,436 km (0.084 R)
• M48: 22,311,924 km (0.071 R)
• M49: 22,594,814 km (0.105 R)
• M50: 22,765,056 km (0.115 R)
• M51: 23,278,625 km (0.065 R)
• M52: 24,375,178 km (0.084 R)
• M53: 25,076,343 km (0.094 R)
• M54: 25,606,668 km (0.105 R)
• M55: 26,081,042 km (0.071 R)
• M56: 26,738,226 km (0.1 R)
• M57: 27,038,618 km (0.083 R)
• M58: 27,159,194 km (0.082 R)
• M59: 27,642,994 km (0.093 R)
• M60: 27,946,827 km (0.109 R)
• M61: 28,496,599 km (0.042 R)
• M62: 29,049,812 km (0.097 R)
• M63: 29,358,732 km (0.11 R)
• M64: 30,479,818 km (0.102 R)
• M65: 31,424,828 km (0.091 R)
• M66: 31,488,108 km (0.065 R)
• M67: 31,932,713 km (0.101 R)
• M68: 35,299,562 km (0.111 R)
• M69: 35,365,385 km (0.079 R)
• M70: 36,158,703 km (0.032 R)
• M71: 36,424,538 km (0.11 R)
• M72: 37,494,014 km (0.094 R)
• M73: 37,561,183 km (0.106 R)
• M74: 37,628,352 km (0.042 R)
• M75: 37,762,991 km (0.088 R)
• M76: 38,370,507 km (0.081 R)
• M77: 38,506,043 km (0.07 R)
• M78: 38,573,811 km (0.107 R)
• M79: 38,845,331 km (0.051 R)
• M80: 39,800,813 km (0.112 R)
• M81: 40,971,266 km (0.114 R)
• M82: 41,109,794 km (0.116 R)
• M83: 42,432,838 km (0.118 R)
• M84: 42,713,184 km (0.11 R)
• M85: 43,416,593 km (0.063 R)
• M86: 44,835,080 km (0.084 R)
• M87: 45,192,021 km (0.076 R)
• M88: 45,263,529 km (0.101 R)
• M89: 48,081,803 km (0.058 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 203 - 14,891 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit